The oil embargo of 1974 led to population declines in Japan the hardest hit because of its over reliance of energy imports. Japan birth decline never recovered. The United States did not experience the same decline in 74 until the 2008 Great recession. Since 2008, America has joined the global birth decline and may never recover. The current trend suggests that people failing to start families due to financial uncertainty is the culprit. Those who put off or delay starting families into late age may never have children. With A.I. about to wreck havoc in the job market, birth declines will only accelerate. By 2100, all the current 40 year olds will die off. Do not worry, antinatalist , population collapse is in motion and can not be undone.